New tent lighting question....CMH heat?

Hey everyone. I just bought a 4x8x6.5 tent and took down the old 4x3.
I'm trying to decide how to put adequate lighting into it without dealing with crazy heat issues.
Right now I've got some Aglex COB lights in there (1-2000 and 2-1200 for a true wattage of 840w from the wall.). I doubt that will be enough wattage when the tent is full so I'm deciding what to do.
My heat this morning is up at 82 with my exhaust running full speed and intake fan going into tent.
I WAS going to put another Aglex 2000 in for a total true watts of 1260 (when the tent is full of plants).
But seeing as how the temp is almost as high as I want to see it....that might not work as I don't want to run an AC at all. It's too bad because I've had good grows with the Aglex lights in my 5x5 and my old 4x3. But I did have to fight heat in the summer.

So, I'm considering my options with buying new lighting. Two choices I'm considering:

1. Go with 3- 315 CMH. I was looking at Sun System vertical with Philips 3100 light...with the ballast that can sit outside the tent. OR possibly 2 - 630w.... but again worried about heat build up.

2. Quantum style lights. Was looking at 2 - 480w lights. Not too sure about heat on these...or whether there's enough coverage to fill the tent with them.

Any help/insite or other options would be great.
Thanks

Having had run 2 CMH in a 4 x 4, and now an HLG 550V2 Rspec I noticed two important differences.

The two 315's were better in veg, because I live in cold country, they added a lot more heat. Winter/spring runs........had the ballast outside the tent too

The HLG quantum board produced MUCH better side branching.......so the spread would be better with this method.....

Couch_Lock said:

Having had run 2 CMH in a 4 x 4, and now an HLG 550V2 Rspec I noticed two important differences.

The two 315's were better in veg, because I live in cold country, they added a lot more heat. Winter/spring runs........had the ballast outside the tent too

The HLG quantum board produced MUCH better side branching.......so the spread would be better with this method.....

Click to expand...

How is the heat with the QB? How many watts are you running for the 4x4?

480 from the wall......I only use a 3 x 4 space inside my tent, I save 6 inches on both sides for humidifiers, fans and moving around. But the ppfd with an HLG 550V2 Rspec is 1257 at 18" inches......It can flower the entire 4 x 4 well.

Hardly any heat is added using the light...maybe 4 degrees fahrenheit warmer at max power, over no light at all......the CMH, just ONE, added a bit more 6 to 8 degrees more.

Awesome. So the one CMH was almost double the heat over the QB in a 4x4. So 3 CMH in a 4x8 would probably bring up the temps 9-12 degrees but 2 QB should still only be about 4-5 degrees.
The CMH that I was looking at would be dimmable to help control heat if needed but then I'd lose intensity and basically defeats the purpose.
The more I look at this...in regards to temp control...the QB look like the clear winner. I just wasn't sure because my COB LEDs were almost supposed to run cool. But in order to get the footprint and intensity...you have to add more lights and thus more heat.
Thanks for the info!

Just wondering when I should start nutrients I’m on days 11 since germination 4 out of 10 seedlings are growing fast than the others.
currently I’m having difficulty choosing a hps 1000 watt lamp?
seedling a currently when a 1200LED aglex
I have been running the hps 4 times a day for 2 hours to rise heat Inside tent temps are great 23.6high and at night 15.7lows
18 and 6 light schedule any pointer would be

Is there anything I’m missing